Total Bridges
27,743
Public highway bridges in Illinois
State profile · Near national median SD
Illinois bridge safety
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Illinois — drawn straight from the FHWA National Bridge Inventory.
- 27,743
- Public bridges
- 41.2%
- Good condition
- 7.9%
- Poor condition
- 7.9%
- Structurally deficient
Good Condition
41.2%
11,426 bridges rated 7-9
-8.8pp vs 50% benchmark
Poor Condition
7.9%
2,186 bridges rated 0-4
Structurally Deficient
7.9%
2,186 bridges flagged for repair priority
0.9pp vs national avg 7.0%
Illinois vs national bridge condition
Illinois — Good condition share 41.2%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Illinois — Structurally deficient share 26.3%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
Bridge inventory deck-condition mix — Illinois (FHWA NBI)
Counties (102)
Adams 325 Alexander 96 Bond 165 Boone 111 Brown 71 Bureau 382 Calhoun 81 Carroll 185 Cass 77 Champaign 743 Christian 323 Clark 232 Clay 171 Clinton 187 Coles 308 Cook 2185 Crawford 196 Cumberland 169 De Witt 197 DeKalb 264 Douglas 234 DuPage 380 Edgar 278 Edwards 79 Effingham 260 Fayette 356 Ford 300 Franklin 323 Fulton 210 Gallatin 82 Greene 166 Grundy 269 Hamilton 164 Hancock 291 Hardin 58 Henderson 144 Henry 331 Iroquois 565 Jackson 235 Jasper 180 Jefferson 270 Jersey 111 Jo Daviess 198 Johnson 120 Kane 354 Kankakee 352 Kendall 133 Knox 321 LaSalle 529 Lake 286 Lawrence 183 Lee 372 Livingston 578 Logan 296 Macon 368 Macoupin 248 Madison 543 Marion 301 Marshall 153 Mason 85 Massac 138 McDonough 210 McHenry 229 McLean 624 Menard 90 Mercer 162 Monroe 130 Montgomery 261 Morgan 241 Moultrie 171 Ogle 377 Peoria 365 Perry 139 Piatt 249 Pike 338 Pope 86 Pulaski 106 Putnam 50 Randolph 155 Richland 147 Rock Island 256 Saline 176 Sangamon 480 Schuyler 121 Scott 96 Shelby 330 St. Clair 502 Stark 89 Stephenson 332 Tazewell 361 Union 192 Vermilion 515 Wabash 88 Warren 202 Washington 232 Wayne 264 White 210 Whiteside 280 Will 674 Williamson 204 Winnebago 475 Woodford 222
Illinois vs nearby ranks
Adjacent states on the structurally deficient leaderboard (lower share = better)
States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Illinois on the same metric.
44
Rhode Island
7.69% top marginal rate
31
Nebraska
7.73% top marginal rate
17
Illinois
7.88% top marginal rate
25
Massachusetts
7.96% top marginal rate
29
Missouri
8.53% top marginal rate
Bridges Needing Most Attention in Illinois
Six lowest-condition bridges in Illinois, ranked by composite NBI rating. Each is inspected at least every 24 months.
FAS 1599
PoorOver: DRAINAGE CANAL
2.2 MI E MEYER, Adams, IL
Built 1980 Load: 0.6 t ADT: 200
CH 15
PoorOver: E FK MAZONRIVER
0.05 MI W CH 16, Grundy, IL
Built 1977 Load: 1.0 t ADT: 1,400
MOOSE RD - TR 240
Structurally DeficientOver: WILSON CREEK
NE-35-T3NR2E, Fulton, IL
Built 1935 Load: 1.3 t ADT: 10
TR 10-B
Structurally DeficientOver: KING CREEK
W EDGE OF MINERAL, Bureau, IL
Built 1899 Load: 1.6 t ADT: 10
TR-6
Structurally DeficientOver: DRAINAGE DITCH
3.5 MI NE DIETERICH, Effingham, IL
Built 1909 Load: 1.6 t ADT: 25
TR208K(TWIN BRIDGE
Structurally DeficientOver: BIG CREEK
NE EDGE MT ZION, Macon, IL
Built 1967 Load: 1.9 t ADT: 375
All Bridges in Illinois
TR 113
FairOver: E FORK OTTER CREEK
4 MI W OF NILWOOD, Macoupin, IL
Built 1984 Load: 34.0 t ADT: 50
FAI 70 EB
FairOver: BRANCH OF SILVER CRK
1.25 M W ILL 4, Madison, IL
Built 1964 Load: 34.0 t ADT: 15,300
ILL 111
FairOver: CAHOKIA DIVERSN CNL
3 M N 270, Madison, IL
Built 1940 Load: 34.0 t ADT: 4,000
IL 159
FairOver: Mooney Creek
Just N. of IL 143, Madison, IL
Built 1937 Load: 34.0 t ADT: 6,550
FAS 766/ FRUIT RD.
FairOver: SAND CREEK
2.8 MI. W. GRANTFORK, Madison, IL
Built 1959 Load: 34.0 t ADT: 425
FAS-1793 (CH-9)
FairOver: TURKEY CREEK
0.6 MI S ODIN, Marion, IL
Built 1983 Load: 34.0 t ADT: 625
ILL 18
FairOver: SANDY CR
0.1 W OF ILL 26, Marshall, IL
Built 1975 Load: 34.0 t ADT: 2,200
FAS 356 CH 23
FairOver: TURKEY CREEK
1.0 MI N LEXINGTON, McLean, IL
Built 1932 Load: 34.0 t ADT: 800
TR 183
FairOver: LITTLE CREEK
1.5 MI NE IRVING, Montgomery, IL
Built 1984 Load: 34.0 t ADT: 25
IL 104
FairOver: WOODS CREEK
2.98M W IL 111, Morgan, IL
Built 1934 Load: 34.0 t ADT: 2,300
COLUMBINE ROAD
FairOver: BR. LEAF RIVER
2.0 NE FOR RESTON, Ogle, IL
Built 1978 Load: 34.0 t ADT: 100
EAGLE POINT RD
FairOver: EAGLE CREEK
5.4 W POLO, Ogle, IL
Built 1977 Load: 34.0 t ADT: 175
TR 195
FairOver: STREAM
2.0 MI NNW HAMMOND, Piatt, IL
Built 1965 Load: 34.0 t ADT: 25
TR 203
FairOver: STREAM
1.0 MI NE LA PLACE, Piatt, IL
Built 1959 Load: 34.0 t ADT: 50
I 57 SB & US 51 SB
FairOver: CACHE RIVER OVERFLOW
3.2 MI S UNION CO, Pulaski, IL
Built 1964 Load: 34.0 t ADT: 6,900
IL 203
FairOver: DRNG TO CAHOKIA CNL
0.1 M N OLD US 40, St. Clair, IL
Built 1960 Load: 34.0 t ADT: 3,500
ILL 177
FairOver: Reinhardt SLOUGH
1.4M E OF JCT IL 4, St. Clair, IL
Built 1994 Load: 34.0 t ADT: 2,450
SCOTT-TROY/ FAU 91
FairOver: ENGLE CREEK
1.65MI N U.S.RTE 50, St. Clair, IL
Built 1973 Load: 34.0 t ADT: 9,250
IL 122
FairOver: CRANE CREEK TRIB
4 MI W OF DELAVAN, Tazewell, IL
Built 1991 Load: 34.0 t ADT: 475
FAS 512(CH 8)
FairOver: JORDAN CREEK
N OF FAIRMOUNT, Vermilion, IL
Built 1958 Load: 34.0 t ADT: 1,900
TR 243
FairOver: FEATHER CREEK
1.5 MI N MUNCIE, Vermilion, IL
Built 1965 Load: 34.0 t ADT: 50
US 34 & 67 (SB)
FairOver: BNSF RR (079039A)
0.8MI N JCT US 34&67, Warren, IL
Built 1992 Load: 34.0 t ADT: 8,100
HURD RD
FairOver: ROCK RIVER
AT HILLSDALE, Whiteside, IL
Built 1953 Load: 34.0 t ADT: 600
COVELL RD
FairOver: LITTLE ROCK CREEK
7 MI N MORRISON, Whiteside, IL
Built 1980 Load: 34.0 t ADT: 100
ILL 2
FairOver: DRAINAGE DITCH
.05 S WISC ST LN, Winnebago, IL
Built 1958 Load: 34.0 t ADT: 13,000
ILL 251 N B
FairOver: DRY CREEK
.32 MI N MCCURRY RD, Winnebago, IL
Built 1967 Load: 34.0 t ADT: 16,600
ILL 251 S B
FairOver: DRY CREEK
.32 MI N MCCURRY RD, Winnebago, IL
Built 1967 Load: 34.0 t ADT: 16,600
AUBURN RD
FairOver: BR OF KENT CREEK
0.3 MI W OF MERIDIAN, Winnebago, IL
Built 1983 Load: 34.0 t ADT: 1,300
CH 21
FairOver: CURTIS CREEK
S CITY LIMITS QUINCY, Adams, IL
Built 1954 Load: 34.3 t ADT: 4,950
US 6
FairOver: ADAMS CREEK
IN SEATONVILLE, Bureau, IL
Built 1986 Load: 34.3 t ADT: 2,000
ILL 84 (FAP 308)
FairOver: RUSH CREEK
3.1 MI S JO DAV CO, Carroll, IL
Built 1927 Load: 34.3 t ADT: 1,400
S WAGNER ROAD
FairOver: OTTER CREEK
3 MI SW MILLEDGEVILL, Carroll, IL
Built 1988 Load: 34.3 t ADT: 25
IL 10(FAU 7123)
FairOver: STREAM
W OF STALEY'S, Champaign, IL
Built 1983 Load: 34.3 t ADT: 3,750
FAP 709 (US 136)
FairOver: STREAM
2 MI E OF RANTOUL, Champaign, IL
Built 1984 Load: 34.3 t ADT: 3,750
SBI 16(FAU 7620)
FairOver: TOWN BRANCH
E EDGE CHARLESTON, Coles, IL
Built 1924 Load: 34.3 t ADT: 2,250
TR 112 A
FairOver: KICKAPOO CREEK
1.0 MI S OF AIRPORT, Coles, IL
Built 1980 Load: 34.3 t ADT: 250
I- 55 EB STEVENSON
FairOver: RR - BRC
0.3 M NE ILL 50, Cook, IL
Built 1963 Load: 34.3 t ADT: 67,900
IL 58 (GOLF RD)
FairOver: POPLAR CREEK
.06 M W IL 59, Cook, IL
Built 1977 Load: 34.3 t ADT: 11,800
CENTRAL AVE
FairOver: N BR CHICAGO RIVER
0.4 M S US 14, Cook, IL
Built 1993 Load: 34.3 t ADT: 16,400
JOE ORR RD
FairOver: DEER CREEK
0.5 M W I94 P2, Cook, IL
Built 1956 Load: 34.3 t ADT: 8,750
LAKE SHORE DR
FairOver: PEDESTRAIN UNDERPASS
5300 N.AND 800 W., Cook, IL
Built 1953 Load: 34.3 t ADT: 62,600
I-294 NB
FairOver: N&W RR
0.3 M SE ILL 7 P26, Cook, IL
Built 1958 Load: 34.3 t ADT: 66,500
I-294 SB
FairOver: N&W RR
0.3 M SE ILL 7 P26, Cook, IL
Built 1958 Load: 34.3 t ADT: 66,500
TR 64
FairOver: LONG POINT CREEK
4.5 M NE WAYNESVILLE, De Witt, IL
Built 1980 Load: 34.3 t ADT: 25
IL 72 FAP 553
FairOver: S BR KISHWAUKEE RIV.
W EDGE GENOA, DeKalb, IL
Built 1931 Load: 34.3 t ADT: 6,000
IL 72 FAP 553
FairOver: UNNAMED CREEK
0.3 MI. W. KIRKLAND, DeKalb, IL
Built 1991 Load: 34.3 t ADT: 2,150
I-57 (NB)
FairOver: DRAINAGE DITCH
.25 MI N OF GALTON, Douglas, IL
Built 1968 Load: 34.3 t ADT: 10,150
I-57 (SB)
FairOver: DRAINAGE DITCH
.25 MI N OF GALTON, Douglas, IL
Built 1968 Load: 34.3 t ADT: 10,150
FAP 749(IL 133)
FairOver: DRAINAGE DITCH
6 MI E OF ARCOLA, Douglas, IL
Built 1932 Load: 34.3 t ADT: 2,300
IL 130(FAP 820)
FairOver: SCATTERING FORK
0.9 MI N of 700N, Douglas, IL
Built 1948 Load: 34.3 t ADT: 2,000
Showing 10,551-10,600 of 27,743 bridges
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.